The steady thermodynamics of a flash-binary geothermal power system based on correction models validated by static tests

Abstract

The operation parameters and performance of a flash-binary power system are analyzed based on four scenarios of the experiment, optimum design, error correction Model 1 and error correction Model 2. The operation parameters of a flash-binary power system are tested to explain steady in the experiment with heat source temperature ranges from 100-150°C. The results show that the simulation data of error correction Model 2 have a good agreement with the experiment and most parameter values of relative error, δ, are less than 5%. The expander with low isotropic efficiency results in the largest exergy losses in the flash-binary power system. The flash-binary power system has better performance to adapt to the mid-high temperature geothermal resource in China. Some valuable data obtained from the research can be applied in the future power plant construction in China's southern Tibet, western Yunnan and Sichuan.

Modification of Kalina cycle system 34g by replacing throttle valve with single-screw expander

“…A lot of research and development efforts have been made to find a method for renewable and sustainable energy utilization and waste heat recovery. Among all technologies, the Organic Rankine Cycle (ORC) and the Kalina cycle (KC) are two popular ones and extensive research has been conducted on the ORC and KC for the past few decades [1][2][3][4]. The research hotspot of the ORC mainly includes two aspects: working fluid selection and parameters optimization [5][6][7].…”